Specify the master password of the account in the new window and set
the new password consisting of 8 digits to protect the certificate.
Next, launch the mobile application and connect to your account. You
will be immediately offered to import the certificate — agree to do that
and enter the numeric password you have set in the desktop MetaTrader 5. The transfer is complete.

The certificate transfer via the trade server is secure: encryption
is performed at the client's side, and the password you have set is not
transferred or stored on the trade server.

Another important innovation is support for the migration of accounts
with open orders, positions, and trading history from MetaTrader 4. If
the broker moves your account from MetaTrader 4 to MetaTrader 5, you
will see the migration dialog window. The system will greet you, provide
you with information on the new platform features, and offer to change
your password.

Update your application right now. The latest version of MetaTrader 5 with an increased security level is already available on the App Store!